標準號：BS EN 60728-7-1-2005
中文標準名稱：電視信號、聲音信號和交互信號設備用電纜網絡.混合光纖同軸電纜外部設備狀況監測.物理層(PHY)規范
英文標準名稱：Cable networks for television signals, sound signals and interactive services - Hybrid fibre coax outside plant status monitoring - Physical (PHY) layer specification
標準類型：M33;M11
發布日期：2005/3/16 12:00:00
實施日期：2005/3/16 12:00:00
中國標準分類號：M33;M11
國際標準分類號：33.060.40
適用范圍：This part of IEC 60728 specifies requirements for The Hybrid Fibre Coax (HFC) Outside Plant (OSP) Physical (PHY) Layer Specification and is part of the series of specifications developed by the Hybrid Management Sub-Layer (HMS) subcommittee under the SCTE. The purpose of the HMS specification is to support the design and implementation of interoperable management systems for evolving HFC cable networks. The HMS Physical (PHY) Layer Specification describes the physical layer portion of the protocol stack used for communication between HMS-compliant transponders interfacing to managed outside plant network elements (NE) and a centralized head-end element (HE). This standard describes the PHY layer requirements that must be implemented by all Type 2 and Type 3 compliant OSP HMS transponders on the HFC plant and the controlling equipment in the head-end. Any exceptions to compliance with this standard will be specifically noted herein as necessary. Refer to Table 1 for a full definition of the type classifications. Electromagnetic Compatibility (EMC) is not specified in this standard and is left to the vendor to ensure compliance with local EMC regulatory requirements. Other than operating temperature, physical parameters such as shock, vibration, humidity, etc., are also not specified and left to the vendor's discretion. Transponder type classifications referenced within the HMS series of standards are defined in Table 1.